Gangue Entrainment in Olivine Flotation: Effect of MIBC Dosage on the Mitigation of Lizardite Recovery

Author(s): Taki Guler*, Ercan Polat

Journal Name: Current Physical Chemistry

Volume 10 , Issue 2 , 2020

Become EABM
Become Reviewer

Graphical Abstract:


Abstract:

Background: Olivine is an important industrial raw material especially for metallurgical applications like foundry sand, refractory, slag conditioning, etc. Loss On Ignition (LOI) value (>1%) is the main specification of olivine ore/concentrate for those areas together with the chemical specifications.

Objective: This flotation study was conducted in natural pH condition with Na-oleate as collector to clarify the effect of frother (MIBC) dosage on the LOI value of olivine concentrate.

Methods: Characterization of ore sample for this study was made by XRD, XRF and petrographic analyses. Lizardite, a serpentine group mineral, was found to be a hydrated soft fraction of ore sample in addition to hard olivine and pyroxene minerals constituting ore.

Results: Finely ground soft lizardite adversely affected the olivine flotation in a way of entraining mechanically into concentrate. LOI value of concentrate was observed mainly to be froth volume depended issue, and therefore, mainly water recovery dependent. LOI value increased proportionally with water recovery at longer flotation time and MIBC dosages indicating the entrainment of lizardite as the suspending hydrophilic component of water phase. Certain rate of the hydrated lizardite mineral was thought to be recovered via hydrophobization, which was clearly seen especially at the initial stages of flotation period in the presence of excess frother. This experimental finding was attributed to similar chemical composition of minerals constituting ore, and accidental activation of lizardite.

Conclusion: Lizardite recovery in froth was explained with accidental activation and/or weak attachment of locked particles onto froth bubble although main recovery mechanism was determined to be mechanical entrainment. Olivine concentrate obeying the specifications of metallurgical applications could be obtained at suitable MIBC dosage and flotation time.

Keywords: Entrainment, Lizardite, LOI, MIBC, Olivine, Loss on Ignition.

[1]
Davis, E.G. Beneficiation of olivine foundry sand by differential attrition grinding. US Patent 4,039,625, August 21977,
[2]
Kleiv, R.A.; Thorhnhill, M. Dry magnetic separation of olivine sand. Physicochem. Probl. Miner. Proces., 2011, 47, 213-228.
[3]
Krivolutskaya, N.A.; Bryanchaninova, N.I. Olivines of igneous rocks. Russ. J. Gen. Chem., 2011, 81(6), 1302-1314.
[http://dx.doi.org/10.1134/S1070363211060363]
[4]
Acar, B. Determination of the Olivin’s properties for the industrial usage.Çayırbağı (Konya) ve Kızıldağ (Akseki) Olivines. M.Sc Thesis, Konya, 2003.
[5]
Brownlow, J.W.; Burton, G.R.; Ferguson, A.C.; Glen, R.A.; Lishmund, S.R.; MacRae, G.P.; Malloch, K.R.; Oakes, G.M.; Paterson, I.B.L.; Pienmunne, J.T.; Ray, H.N. Industrial mineral opportunities in new south wales. NSW Geol. Surv. Bull, 2007, pp33.
[6]
Harben, P.W.; Smith, C. Jr. Olivine industrial minerals and rocks: Commodities, markets and uses.Kogel, J.E.; Trivedi, N.C.;Barker, J.M.; Krukowski,S.T. Eds.. Society for mining, metallurgy and exploration: Englewood, IL,, 2006, pp. 679-683.
[7]
Jolsterå, R. Reactions at the water-mineral interface of olivine and silicate modified maghemite, PhD dissertation,. Luleå Tekniska Universitet : Lulea, Sweden,, 2010.
[8]
Örgün, Y.; Erarslan, C. Olivine in 21st century and olivine potential of Turkey; (in Turkish)Mining Turkey ., 2012, pp. 62-74.
[9]
Güney, A.; Atak, S. Separation of chromite from olivine by anionic collectors. Physicochem. Probl. Miner. Proces., 1997, 31, 99-106.
[10]
King, R. Olivine Group. J. Geol. Today, 2009, 25(5), 193.
[http://dx.doi.org/10.1111/j.1365-2451.2009.00730.x]
[11]
Tong, L.; Klein, B.; Zanin, M.; Quast, K.; Skinner, W.; Addai-Mensah, J.; Robinson, D. Stirred milling kinetics of siliceous goethitic nickel laterite for selective comminution. Miner. Eng., 2013, 49, 109-115.
[http://dx.doi.org/10.1016/j.mineng.2013.05.013]
[12]
Cho, H.; Luckie, P.T. Investigation of the breakage properties of components in mixtures ground in a batch ball-and-race mill. Energy Fuels, 1995, 9(1), 53-58.
[http://dx.doi.org/10.1021/ef00049a008]
[13]
Velázquez, A.L.C.; Menéndez-Aguado, J.M.; Brown, R.L. Grindability of lateritic nickel ores in Cuba. Powder Technol., 2008, 182(1), 113.
[http://dx.doi.org/10.1016/j.powtec.2007.05.027]
[14]
Güler, T.; Aktürk, S.; Özer, A. Preconcentration of Muğla/Köyceğiz olivines by comminution. 14th International Mineral Processing Symposium, Kuşadası, Turkey2014, pp. 779-785.
[15]
Haug, T.A. Dissolution and carbonation of mechanically activated olivine – ınvestigating CO2 sequestration possibilities. Ph.D. Thesis, NTNU,Institutt for geovitenskap og petroleum: Trondheim, Norway,, 2010.
[16]
Liang, L.; Tan, J.; Li, B.; Xie, G. Reducing quartz entrainment in fine coal flotation by polyaluminum chloride. Fuel, 2019, 235, 150-157.
[http://dx.doi.org/10.1016/j.fuel.2018.07.106]
[17]
Popli, K.; Afacan, A.; Liu, Q.; Pradas, V. Real-time monitoring of entrainment using fundamental models and froth images. Miner. Eng., 2018, 124, 44-62.
[http://dx.doi.org/10.1016/j.mineng.2018.05.004]
[18]
Güler, T.; Akdemir, Ü. Statistical evaluation of flotation and entrainment behavior of an artificial ore. Trans. Nonferrous Met. Soc. China, 2012, 22(1), 199-205.
[http://dx.doi.org/10.1016/S1003-6326(11)61161-8]
[19]
Wang, L.; Peng, Y.; Runge, K.; Bradshaw, D. A review of entrainment: Mechanisms, contributing factors and modeling in flotation. Miner. Eng., 2015, 70, 77-91.
[http://dx.doi.org/10.1016/j.mineng.2014.09.003]
[20]
Wiese, J.G.; Harris, P.J.; Bradshaw, D.J. The effect of increased frother dosage on froth stability at high depressant dosages. Miner. Eng., 2010, 23, 1010-1017.
[http://dx.doi.org/10.1016/j.mineng.2010.04.011]
[21]
Güler, T.; Aktürk, S. Beneficiation of olivine ore by Na-oleate flotation. 16th Balkan Mineral Processing Congress, Belgrade2015, pp. 543-548.
[22]
Bremmell, K.E.; Fornasiero, D.; Ralston, J. Pentlandite-lizardite interactions and implications for their separation by flotation. Colloids Surf. A Physicochem. Eng. Asp., 2005, 252(2-3), 207-212.
[http://dx.doi.org/10.1016/j.colsurfa.2004.10.100]
[23]
Gallios, G.P.; Deliyanni, E.A.; Peleka, E.N.; Matis, K.A. Flotation of chromite and serpentine. Separ. Purif. Tech., 2007, 55, 232-237.
[http://dx.doi.org/10.1016/j.seppur.2006.12.015]
[24]
Cilek, E.C. The effect of hydrodynamic conditions on true flotation and entrainment in flotation of a complex sulphide ore. Int. J. Miner. Process., 2009, 90, 35-44.
[http://dx.doi.org/10.1016/j.minpro.2008.10.002]
[25]
Ross, W.E. Flotation and entrainment of particles during batch flotation tests. Miner. Eng., 1990, 3, 254-256.
[26]
Wills, B.A.; Napier-Munn, T. Wills’ mineral processing technology: An introduction to the practical aspects of ore treatment and mineral recovery; Butterworth-Heinemann: Oxford, United Kingdom, 2005, p. 444.
[27]
Trahar, W.J. A rational interpretation of the role of particle size in flotation. Int. J. Miner. Process., 1981, 8(4), 289-327.
[http://dx.doi.org/10.1016/0301-7516(81)90019-3]
[28]
Akdemir, Ü.; Sönmez, I. Investigation of coal and ash recovery and entrainment in flotation. Fuel Process. Technol., 2003, 82(1), 1-9.
[http://dx.doi.org/10.1016/S0378-3820(02)00248-5]
[29]
Schubert, H. On the turbulence-controlled microprocesses in flotation machines. Int. J. Miner. Process., 1999, 56, 257-276.
[http://dx.doi.org/10.1016/S0301-7516(98)00048-9]
[30]
Neethling, S.J.; Cilliers, J.J. The entrainment of gangue into a flotation froth. Int. J. Miner. Process., 2002, 64, 123-134.
[http://dx.doi.org/10.1016/S0301-7516(01)00067-9]


open access plus

Rights & PermissionsPrintExport Cite as

Article Details

VOLUME: 10
ISSUE: 2
Year: 2020
Page: [98 - 106]
Pages: 9
DOI: 10.2174/1877946809666190919092219

Article Metrics

PDF: 17
HTML: 1